List of top Questions asked in NEET (UG)

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
Column IColumn II
a.Co3+i.\(\sqrt8\) B.M.
b.Cr3+ii.\(\sqrt{35}\) B.M.
c.Fe3+iii.\(\sqrt3\) B.M.
d.Ni2+iv.\(\sqrt{24}\) B.M.
  v.\(\sqrt{15}\) B.M.
The correct difference between first- and second-order reactions is that
The geometry and magnetic behaviour of the complex [Ni(CO)4] are
Iron carbonyl, Fe(CO)5 is
The type of isomerism shown by the complex [CoCl2(en)2] is
Which of the following is correct with respect to – I effect of the substituents ? (R = alkyl)
Which of the following carbocations is expected to be most stable ?
In the reaction
the electrophile involved is
the electrophile involved is
The difference between amylose and amylopectin is
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell.
A and Y are respectively
A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H2SO4 . The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be
Which one of the following elements is unable to form MF63-ion ?
Which of the following statements is not true for halogens ?
The correct order of N-compounds in its decreasing order of oxidation states is
Nitration of aniline in strong acidic medium also gives m-nitroaniline because
Which of the following oxides is most acidic in nature ?
Regarding cross-linked or network polymers, which of the following statements is incorrect ?
The solubility of BaSO4 in water is 2·42 × 10-3 gL-1 at 298K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO4 = 233 g mol-1)
In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is
Considering Ellingham diagram, which of the following metals can be used to reduce alumina ?
On which of the following properties does the coagulating power of an ion depend ?
The correct order of atomic radii in group 13 elements is
Which one of the following statements is incorrect ?
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct ?